It's a 1950s Special:
QUOTE
This car was first registered in 1937 as an Austin Seven Ruby saloon, the body is believed to be a one off, or modified Super Accessories, Super Sportsman. Constructed with an aluminium skin on a tubular steel frame.
The Austin Seven chassis was retained, stiffened and braced. The 750cc two bearing engine is fitted with a high compression cylinder head, double valve springs and re profiled cam followers.
Speedex independent front suspension, hydraulic brakes from an early Morris Minor and smaller 15 inch wheels
UNQUOTE
Rear view: